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B643-4010-F12 — CONNECTION,FLEXIBLE,PIPELINE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

B643-4010-F12: CONNECTION,FLEXIBLE,PIPELINE.

The CONNECTION,FLEXIBLE,PIPELINE is a the manufacturer industrial component. Key specifications include overall_length: 0.500 INCHES NOMINAL IN, connection_design: STRAIGHT, end_item_identification: MISC PARTS VENTILATION SYSTEMS SSN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-516-7331, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
B643-4010-F12
NSN: 4730-01-516-7331
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
overall_length0.500 INCHES NOMINAL IN
special_featuresFLANGED ROUND SYNTHETIC RUBBER; 4,500WX2.500OD; CHANNEL EXTRUDED SYSTHETIC RUBBER 2.500X1.690X0.187 THICK; OD15.88; ID12.50
connection_designSTRAIGHT
end_item_identificationMISC PARTS VENTILATION SYSTEMS SSN
NSN4730-01-516-7331
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: B643-4010-F12 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CONNECTION DESIGN: STRAIGHT
TECHNICAL CHARACTERISTICS
CONNECTION DESIGNSTRAIGHT
OVERALL LENGTH0.500 INCHES NOMINAL IN
SPECIAL FEATURESFLANGED ROUND SYNTHETIC RUBBER; 4,500WX2.500OD; CHANNEL EXTRUDED SYSTHETIC RUBBER 2.500X1.690X0.187 THICK; OD15.88; ID12.50
END ITEM IDENTIFICATIONMISC PARTS VENTILATION SYSTEMS SSN
SUBSTITUTES & CROSS-REFERENCES 3
512-6406851 FN 166Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
512-6406851Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
512-6903605-F112Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B643-4010-F12?
B643-4010-F12 is a CONNECTION,FLEXIBLE,PIPELINE.
What parts can replace B643-4010-F12?
There are 3 known substitutes for B643-4010-F12: 512-6406851 FN 166, 512-6406851, 512-6903605-F112. Substitute compatibility should be verified for your specific system.
What is the NSN for B643-4010-F12?
B643-4010-F12 is cataloged in the U.S. Government catalog under NSN 4730-01-516-7331. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.